Claude Opus 4.5 vs GLM-5.2
Claude Opus 4.5 leads in 4 of 8 categories
Arena ELO
Claude Opus 4.5
Cheaper
GLM-5.2
Faster
Claude Opus 4.5
Detailed Comparison
| Category | Claude Opus 4.5 | GLM-5.2 |
|---|---|---|
| Provider | Anthropic | Z.ai |
| Context Window | 200K WIN | 128K |
| Input Price ($/1M) | $5 | $3 WIN |
| Output Price ($/1M) | $25 WIN | $80 |
| Arena ELO | 1380 WIN | N/A |
| Coding | 80.9% SWE-bench | N/A |
| Reasoning | unknown | N/A |
| Speed (tokens/sec) | ~35 t/s WIN | N/A |
| Open Source | No | Yes |
Frequently Asked Questions
Which is cheaper, Claude Opus 4.5 or GLM-5.2?
Claude Opus 4.5 is approximately 64% cheaper than GLM-5.2 per million tokens.
Which is better for coding, Claude Opus 4.5 or GLM-5.2?
Claude Opus 4.5 scores 80.9% SWE-bench on coding benchmarks, while GLM-5.2 scores N/A.
Which has a larger context window?
Claude Opus 4.5 supports 200K context, while GLM-5.2 supports 128K.
Is Claude Opus 4.5 or GLM-5.2 open source?
Claude Opus 4.5 is proprietary. GLM-5.2 is open source.
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